Archive of the former Yahoo!Groups mailing list: Yamaha CS80

Hi all
I’ve sent a message some days ago with no reply.
I’m calibrating a 60 and discovered some weird things:

-if the machine’s VCOs are set on 1OCT UP and I play the upper C6 note, then I bend up one octave while pressing the key, the pitch gets stuck and so goes with all the following voices

-with the SubOscillator modulating through rising saw I can clearly see a strange thing on the oscilloscope: the CV signal coming out of the Vca is clearly warped at +0.5V, so there is a distortion placed only at this amplitude.

Can anybody tell me anything about these problems or where and how to look?
Thanks
M

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